<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>

<body>
    <div id="app">
        <table>
            <tr is="v-tr"></tr>
        </table>
    </div>
</body>
<script src="../js/vue.js"></script>
<script>
    Vue.config.productionTip = false;
    Vue.component("v-tr", {
        template: "<tr> <td>123</td> </tr>"
    })

    new Vue({
        el: "#app"
    })
</script>

</html>